Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA2CA9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N755AN · BOEING 777-200 · operated by AMERICAN AIRLINES INC

Hex
AA2CA9
Octal
52426251
Decimal
11,152,553
Country
US
Tail
N755AN
Type
B772
No current signal · last broadcast Jul 25, 22:30 UTC
Flights observed
239
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 22:30 UTC

Last known position

Most recent position reported by Mode-S AA2CA9.

Country allocation

The ICAO 24-bit address AA2CA9 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
AAL52 - 13 2026-07-10
AAL908 - 10 2026-07-10
AAL239 American Airlines 10 2026-07-25
AAL907 - 8 2026-07-09
AAL69 - 8 2026-07-03
AAL198 American Airlines 7 2026-07-20
AAL193 - 7 2026-06-27
AAL931 American Airlines 6 2026-06-09
AAL48 American Airlines 6 2026-06-24
AAL43 - 6 2026-07-18
AAL199 - 6 2026-07-21
AAL787 American Airlines 5 2026-06-12
AAL749 - 5 2026-07-16
AAL488 - 5 2026-07-08
AAL220 American Airlines 5 2026-06-23
AAL113 American Airlines 5 2026-05-01
AAL112 American Airlines 5 2026-05-01
AAL900 American Airlines 4 2026-05-23
AAL732 - 4 2026-07-05
AAL705 - 4 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AAL239 FCO → DFW Jul 25, 11:40 UTCJul 25, 22:20 UTC10h 40m
2026-07-25 AAL239 FCO → DFW Jul 25, 11:36 UTCJul 25, 22:20 UTC10h 44m
2026-07-24 AAL720 CLT → FCO Jul 24, 23:25 UTCJul 25, 08:00 UTC8h 35m
2026-07-24 AAL325 ORD → LGA Jul 24, 09:20 UTCJul 24, 20:15 UTC10h 55m
2026-07-24 AAL325 ORD → LGA Jul 24, 09:20 UTCJul 24, 20:13 UTC10h 53m
2026-07-23 AAL334 JFK → ATH Jul 23, 22:20 UTCJul 24, 06:45 UTC8h 25m
2026-07-21 AAL199 MXP → JFK Jul 21, 09:25 UTCJul 21, 17:10 UTC7h 45m
2026-07-20 AAL198 JFK → MXP Jul 20, 23:30 UTCJul 21, 06:40 UTC7h 9m
2026-07-20 AAL199 MXP → JFK Jul 20, 11:20 UTCJul 20, 19:15 UTC7h 55m
2026-07-19 AAL198 JFK → MXP Jul 19, 23:40 UTCJul 20, 06:55 UTC7h 15m
2026-07-18 AAL43 - Jul 18, 16:20 UTCJul 18, 23:25 UTC7h 5m
2026-07-18 AAL43 CDG → JFK Jul 18, 16:17 UTCJul 18, 23:30 UTC7h 13m
2026-07-17 AAL786 SLC → PHL Jul 17, 22:10 UTCJul 18, 05:40 UTC7h 31m
2026-07-17 AAL705 - Jul 17, 10:35 UTCJul 17, 18:55 UTC8h 20m
2026-07-17 AAL705 FRA → CLT Jul 17, 10:31 UTCJul 17, 19:00 UTC8h 29m
2026-07-17 AAL704 - Jul 17, 00:20 UTCJul 17, 08:10 UTC7h 50m
2026-07-16 AAL749 - Jul 16, 11:25 UTCJul 16, 12:14 UTC50m
2026-07-16 AAL749 MAD → CLT Jul 16, 11:24 UTCJul 16, 19:55 UTC8h 31m
2026-07-15 AAL36 DFW → MAD Jul 15, 21:55 UTCJul 16, 07:05 UTC9h 10m
2026-07-15 AAL36 DFW → MAD Jul 15, 21:53 UTCJul 16, 06:55 UTC9h 2m
2026-07-14 AAL60 NRT → DFW Jul 14, 09:54 UTCJul 14, 21:41 UTC11h 47m
2026-07-14 AAL60 - Jul 14, 09:55 UTCJul 14, 10:15 UTC20m
2026-07-13 AAL61 DFW → NRT Jul 13, 17:15 UTCJul 14, 05:40 UTC12h 25m
2026-07-13 AAL116 - Jul 13, 08:01 UTCJul 13, 10:55 UTC2h 55m
2026-07-13 AAL116 OGG → DFW Jul 13, 03:59 UTCJul 13, 10:51 UTC6h 52m
2026-07-12 AAL123 - Jul 12, 17:01 UTCJul 12, 19:35 UTC2h 35m
2026-07-11 AAL239 - Jul 11, 12:20 UTCJul 11, 23:20 UTC11h 0m
2026-07-10 AAL52 - Jul 10, 23:50 UTCJul 11, 09:20 UTC9h 30m
2026-07-10 AAL908 - Jul 10, 01:45 UTCJul 10, 02:15 UTC30m
2026-07-10 AAL908 EZE → MIA Jul 10, 01:45 UTCJul 10, 10:14 UTC8h 29m
2026-07-09 AAL907 - Jul 9, 03:15 UTCJul 9, 12:10 UTC8h 55m
2026-07-09 AAL907 MIA → EZE Jul 9, 03:12 UTCJul 9, 11:58 UTC8h 46m
2026-07-08 AAL488 - Jul 8, 22:45 UTCJul 9, 00:15 UTC1h 30m
2026-07-08 AAL488 CLT → MIA Jul 8, 22:42 UTCJul 9, 00:10 UTC1h 28m
2026-07-07 AAL733 - Jul 7, 11:20 UTCJul 7, 19:40 UTC8h 20m
2026-07-07 AAL174 - Jul 7, 01:55 UTCJul 7, 08:55 UTC7h 0m
2026-07-06 AAL173 - Jul 6, 12:25 UTCJul 6, 20:25 UTC8h 0m
2026-07-06 AAL173 LHR → RDU Jul 6, 12:23 UTCJul 6, 20:21 UTC7h 58m
2026-07-06 AAL194 PHX → LHR Jul 6, 00:10 UTCJul 6, 09:50 UTC9h 40m
2026-07-05 AAL195 LHR → PHX Jul 5, 10:30 UTCJul 5, 20:40 UTC10h 10m
2026-07-05 AAL195 LHR → PHX Jul 5, 10:30 UTCJul 5, 20:35 UTC10h 5m
2026-07-05 AAL732 - Jul 5, 00:55 UTCJul 5, 03:25 UTC2h 30m
2026-07-05 AAL732 CLT → LHR Jul 5, 00:52 UTCJul 5, 07:48 UTC6h 56m
2026-07-04 AAL721 - Jul 4, 12:05 UTCJul 4, 21:40 UTC9h 35m
2026-07-03 AAL52 - Jul 3, 23:45 UTCJul 4, 09:10 UTC9h 25m
2026-07-03 AAL69 MAD → MIA Jul 3, 12:20 UTCJul 3, 20:43 UTC8h 23m
2026-07-03 AAL69 - Jul 3, 12:20 UTCJul 3, 20:45 UTC8h 25m
2026-07-03 AAL69 MAD → MIA Jul 3, 12:20 UTCJul 3, 20:44 UTC8h 24m
2026-07-02 AAL36 DFW → MAD Jul 2, 23:55 UTCJul 3, 09:15 UTC9h 20m
2026-07-01 AAL60 NRT → DFW Jul 1, 09:45 UTCJul 1, 20:40 UTC10h 55m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N755AN page for operator, model, and routing details .

Mode-S AA2CA9 frequently asked

What is Mode-S code AA2CA9?
AA2CA9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N755AN.
Where is Mode-S AA2CA9 registered?
Mode-S code AA2CA9 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AA2CA9 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA2CA9, octal 52426251, decimal 11,152,553.
What flights does AA2CA9 operate?
Mode-S AA2CA9 has broadcast 20 distinct callsigns, including AAL52, AAL908, AAL239, AAL907, AAL69.